Yellowstone Hot Pools

Take this as fair warning for what you are about to see. I'm not sure who this sign is directed at, do they want spanish asian minority children with cameras to pay special attention so they aren't scalded to death. I sure hope that kid is gonna be ok.

The Grand Prismatic spring covers several acres. Notice the size of the trees in the background

A sign nearby for the Morning Glory pool asks that humans please don't throw anything into the pool as it was changing the coloring of it. The color is caused by algae that live in the heat, the blue colored algae live in the hottest parts.